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Demographic variables
| Min | Max | Mean (SD) | N | |
|---|---|---|---|---|
| Age | 19 | 24 | 21 (1.23) | 17 |
| Verbal IQ | 105 | 117 | 110.29 (4.04) | 17 |
| Males | Females | ||
|---|---|---|---|
| Sex | 11 | 6 | 17 |
| Drug use (number of times used in lifetime) | Min | Max | Mean (SD) | N |
|---|---|---|---|---|
| Ecstasy/MDMA | 1 | 120 | 18 (33) | 17 |
| Amphetamine | 0 | 25 | 2 (6) | 17 |
| Cannabis | 0 | 300 | 55 (92) | 16* |
| Cocaine | 0 | 40 | 5 (12) | 17 |
| Mushrooms | 0 | 8 | 3 (2) | 17 |
| LSD | 0 | 0 | 0 (0) | 17 |
| Ketamine | 0 | 5† | 0 (1) | 17 |
One subject answered: ‘sometimes’;
Only one subject used ketamine.
